Improvement in machines for sawing shingles



J. PERRY.

MACHINE FOR SAWING SHINGLES. N 185 34 .8 Patented Dec.1Z, 1876.

WITNESSES v V I .lNV ENTOR ATTOR N EY N.FETERS, PHOTO-UTHOGRAPHER. WASHINGTON, D c.

' the roll-frame by the link or rod 1).

JOSEPH PERRY, OF GARDINER, MAINE.

IMPROVEMENT iN MACHlNES FOR SAWING SHINGLES.

Specification forming part of Letters Patent No. 185,348, dated December 12, 1876; application filed August 31, 1876.

Gardiner, in the county of Kennebec and State of Maine, have invented certain new and useful Improvements in Machines for Sawing Shingles; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 is a front view of the carriage of a shingle-machine to which my improvement is attached, and Fig. 2 represents a vertical section of the same.

Shingle-machine carriages have been provided with an auxiliary roll, which serves to guide the block between the set-rolls. These guide-rolls have been journaled in a vertically-zuljustable frame upheld by a spring, as shown in Patent No. 38,932.\ My improvement on the patent referred to consists in mounting the guide-roll of a shingle machine or carriage on the free end of a vibratory spring, whereby the roll may readily yield to vertical longitudinal strain or pressure.

A A represent the frame of the carriage, which is secured to the base B. Upper and lower set-rolls O D are journaled in the frame A A, each roller having ratchetwheels E F attached to their ends, and are rotated in the same direction by means of pawls GH, which are pivoted to the centrally-pivoted lever I. The upper set-roll G is weighted and capable of vertical adjustment by means of the handlever J, which is fulcrumed in a post,j, attached to the cross-bar a, and connects with The outer end of the lever J moves in a notched guide-plate, 0, so that the lever, being depressed to raise the upper set-roll, can spring into the notch in the plate 0, is there firmly secured, and retains the upper roll in its raised position. K is a fiat metallic spring,

secured at d to the frame or base of the carriage, while its free end is bent upwardly, and provided with ears or bearings for an auxiliary pressure-roll, L.

The object of the pressure-roll L is to prevent any lateral movement of thebolt after it has been adjusted between the upper and lower set-rolls. As the bolt is tipped or its rear end raised and lowered to adjust the bolt to enable the butt and tip ofthe shingle to be cut by the saw, the auxiliary or rear pressure-roll L will continually press against the lower surface of the bolt, and effectually prevent any side movement or displacement of the bolt. By securing the roller L to the free end of a spring, as shown, the roller has both vertical and horizontal movement, and hence it read ily adjusts itself to the bolt, regardless of its position or inequalities of surface.

It will be observed that this pressure roll L is both fluted and grooved the same as the two set-rolls, and while I prefer such a construction, I am not limited to it; but the main principle of myinvention consistsin adding to the two usual set-rolls an auxilary rear pressure-roll journaled in the free end of a sprln g.

I do not claim, broadly, the combination of a pressure-roll with the upper and lower settwo witnesses.

JOSEPH PERRY. Witnesses:

CHARLES SWIFT, LINCOLN PERRY. 

